The world’s most dangerously placed mountain hut is located 13,000 feet above ground level in Switzerland.

The hut, which can accommodate about 10 people, is not a recent construction. It was actually built way back in 1915 and took only five days to complete. All the building materials were brought up to Hornli Hut, just 2,500 foot below, with the help of animals.

It’s called The Solvay Hut.